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                [Scoi2016]背单词                </h1>
                <p>时间限制：10s&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  空间限制：256MB</p>			</div>
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                                <h3>题目描述</h3><p><div>Lweb 面对如山的英语单词，陷入了深深的沉思，&ldquo;我怎么样才能快点学完，然后去玩三国杀呢？&rdquo;。这时候睿智</div>
<div>的凤老师从远处飘来，他送给了 Lweb 一本计划册和一大缸泡椒，他的计划册是长这样的：</div>
<div>&mdash;&mdash;&mdash;&mdash;&mdash;</div>
<div>序号 &nbsp;单词</div>
<div>&mdash;&mdash;&mdash;&mdash;&mdash;</div>
<div>&nbsp;1</div>
<div>&nbsp;2</div>
<div>&hellip;&hellip;</div>
<div>n-2</div>
<div>n-1</div>
<div>&nbsp;n</div>
<div>&mdash;&mdash;&mdash;&mdash;&mdash;</div>
<div></div>
<div>然后凤老师告诉 Lweb ，我知道你要学习的单词总共有 n 个，现在我们从上往下完成计划表，对于一个序号为 x&nbsp;</div>
<div>的单词（序号 1...x-1 都已经被填入）：</div>
<div>1) 如果存在一个单词是它的后缀，并且当前没有被填入表内，那他需要吃 n&times;n 颗泡椒才能学会；</div>
<div>2) 当它的所有后缀都被填入表内的情况下，如果在 1...x-1 的位置上的单词都不是它的后缀，那么你吃 x 颗泡</div>
<div>椒就能记住它；</div>
<div>3) 当它的所有后缀都被填入表内的情况下，如果 1...x-1的位置上存在是它后缀的单词，所有是它后缀的单词中</div>
<div>，序号最大为 y ，那么你只要吃 x-y 颗泡椒就能把它记住。</div>
<div>Lweb 是一个吃到辣辣的东西会暴走的奇怪小朋友，所以请你帮助 Lweb ，寻找一种最优的填写单词方案，使得他</div>
<div>记住这 n 个单词的情况下，吃最少的泡椒。</div>
<div></div></p><hr/><h3>输入格式</h3><p><div>输入一个整数 n ，表示 Lweb 要学习的单词数。接下来 n 行，每行有一个单词（由小写字母构成，且保证任意单</div>
<div>词两两互不相同）1&le;n&le;100000, 所有字符的长度总和 1&le;|len|&le;510000</div>
<div></div></p><hr/><h3>输出格式</h3><p><p>&nbsp;Lweb 吃的最少泡椒数</p>
<div></div></p><hr/><h3>样例输入</h3><pre>2 
a 
ba</pre><hr/><h3>样例输出</h3><pre>2</pre><hr/><h3>提示</h3><p>没有写明提示</p><hr/><h3>题目来源</h3><p>没有写明来源</p>
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